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| author | mmitchel <mmitchel@138bc75d-0d04-0410-961f-82ee72b054a4> | 2002-10-21 08:40:24 +0000 |
|---|---|---|
| committer | mmitchel <mmitchel@138bc75d-0d04-0410-961f-82ee72b054a4> | 2002-10-21 08:40:24 +0000 |
| commit | 5671723d4ce1dc0331e4d13a64484a67e0a6f5c9 (patch) | |
| tree | 6ec5aa6e54097ca287116667434de18a185afc25 /gcc/cp/cp-tree.h | |
| parent | 3421d57239f17e77aab044644726c8557f290ebc (diff) | |
| download | gcc-5671723d4ce1dc0331e4d13a64484a67e0a6f5c9.tar.gz | |
PR c++/8218
* cp-tree.h (lang_type_class): Add contains_empty_class_p.
(CLASSTYPE_CONTAINS_EMPTY_CLASS_P): New macro.
* class.c (check_bases): Update CLASSTYPE_CONTAINS_EMPTY_CLASS_P.
(check_field_decls): Likewise.
(layout_class_type): Likewise.
(finish_struct_1): Initialize it.
(walk_subobject_offsets): Use it to prune searches.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@58356 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/cp/cp-tree.h')
| -rw-r--r-- | gcc/cp/cp-tree.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/gcc/cp/cp-tree.h b/gcc/cp/cp-tree.h index 52f921cab84..06e80b58601 100644 --- a/gcc/cp/cp-tree.h +++ b/gcc/cp/cp-tree.h @@ -1135,6 +1135,7 @@ struct lang_type_class GTY(()) unsigned anon_aggr : 1; unsigned non_zero_init : 1; unsigned empty_p : 1; + unsigned contains_empty_class_p : 1; /* When adding a flag here, consider whether or not it ought to apply to a template instance if it applies to the template. If @@ -1143,7 +1144,7 @@ struct lang_type_class GTY(()) /* There are some bits left to fill out a 32-bit word. Keep track of this by updating the size of this bitfield whenever you add or remove a flag. */ - unsigned dummy : 5; + unsigned dummy : 4; int vsize; @@ -1457,6 +1458,10 @@ struct lang_type GTY(()) #define CLASSTYPE_NEARLY_EMPTY_P(NODE) \ (LANG_TYPE_CLASS_CHECK (NODE)->nearly_empty_p) +/* Nonzero if this class contains an empty subobject. */ +#define CLASSTYPE_CONTAINS_EMPTY_CLASS_P(NODE) \ + (LANG_TYPE_CLASS_CHECK (NODE)->contains_empty_class_p) + /* A list of class types of which this type is a friend. The TREE_VALUE is normally a TYPE, but will be a TEMPLATE_DECL in the case of a template friend. */ |